Self-compacting backfill material processing device
By designing a self-contained backfill material processing device, including a sorting system and an auxiliary material storage bin, the problem of difficulty in quality control of earth materials in self-contained backfill materials is solved, efficient filtration of main materials and fine mixing of auxiliary materials is achieved, and the material is improved Quality and performance.
Patent Information
- Application Number
- CN202420335285.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-22
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-22
AI Technical Summary
The performance of self-contained backfill materials depends on the quality of the constituent materials, and the particle size, fineness and organic matter content of the soil need to be strictly controlled, otherwise it will affect the uniformity, fluidity of the material and the cementing result of the gelling material.
A self-contained backfill material treatment device is designed, including a main material storage bin, sorting system and auxiliary material storage bin. The sorting system includes screening equipment, wind grading equipment and magnetic separation equipment, which are used to remove unnecessary impurities and particles and ensure the quality of the main material. The auxiliary material storage bin is connected to the preliminary mixing tank and the secondary mixing tank through a transfer pipeline. The auxiliary material is prepared by a control valve and a distributor to ensure the mixing uniformity and compactness.
Through precise filtration and sorting, the quality and processing efficiency of the main materials are improved. The fine mixing of auxiliary materials ensures that the gelling effect and strength of the self-contained backfill material meets the requirements, and improves the uniformity and compactness of the material.
Smart Images
Figure CN222494868U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of self-compacting backfill materials, in particular to a self-compacting backfill material processing device. Background Art
[0002] Self-compacting backfill material is a special type of concrete, which is made of raw materials such as soil, cementitious materials, admixtures and water, which are evenly mixed according to the set ratio to form a material with fluidity, uniformity and stability. Backfill construction does not require external rolling or vibration, and can flow and fill the groove space under the action of its own weight, and after solidification, it can meet the engineering performance. The soil material can usually be industrial by-products such as fly ash, slag, or waste mud, engineering waste and construction waste on the construction site, which helps to reduce the use of cement, reduce construction costs, and achieve green environmental protection.
[0003] Although self-compacting backfill materials can use various by-products or engineering waste as the main soil materials, their performance also depends on the quality of the constituent materials. The particle size, fineness and organic matter content of the soil materials need to be strictly controlled, otherwise it will have an adverse effect on the uniformity and fluidity of the self-compacting backfill materials and the bonding results of the cementitious materials.
[0004] In view of this, the present utility model is proposed. Utility Model Content
[0005] The purpose of the utility model is to provide a self-compacting backfill material processing device, which gradually separates unnecessary impurities, particles, etc. from the main material by setting and connecting a sorting system, which is beneficial to optimizing the quality of the raw materials, improving the quality of the backfill materials, and facilitating classified storage in the main material storage bin.
[0006] In order to achieve the above-mentioned purpose of the utility model, the following technical solutions are specially adopted:
[0007] The utility model provides a self-compacting backfill material processing device, including a main material storage bin, which is connected to a sorting system through a main material conveying channel. The sorting system includes screening equipment, wind classification equipment and magnetic separation equipment connected in sequence, and the magnetic separation equipment is connected to the main material storage bin.
[0008] The utility model allows the raw materials to be screened, wind-force classified and magnetically separated respectively until a qualified processed main material is obtained. Among them, the screening equipment is preferably a rotary screening machine, which allows the main material to pass through a screen of a specific size by vibration and rotation to remove large particles and impurities. Too large a particle size will affect the fluidity of the backfill material and cause difficulty in filling a smaller space; the wind-force classification equipment is mainly used to blow away light impurities such as paper and plastic by strong wind to avoid affecting the uniformity and density of the backfill material; the magnetic separator is used to separate impurities containing magnetic particles, especially when construction waste, engineering waste soil, etc. are used as the main main material. These materials are often mixed with steel fragments, metal pipes, nails and other metal objects. If they are not removed, it will affect the quality and safety of the backfill material.
[0009] Finally, the raw materials that pass through the sorting system will be sent to the main material storage bin for classified storage, so that they can be selected according to construction needs or the strength requirements of self-compacting backfill materials.
[0010] Preferably, the screening equipment, wind classification equipment and magnetic separation equipment are all provided with monitoring equipment.
[0011] For crushed construction waste, slag and engineering waste, such as silty soil, clay soil, mixed soil, etc., it is particularly necessary to ensure that the organic matter content is less than 5% to avoid affecting the cementitious effect of cementitious materials; for construction waste, it is particularly necessary to ensure that it does not contain decorative materials, steel bars and other debris. By setting up monitoring equipment to continuously test and monitor the filtration process, it is ensured that the main material meets the technical requirements of filtration after passing through the filtration equipment, and the organic matter content of the final main material is within the specified range.
[0012] Preferably, it also includes an auxiliary material storage bin, which is connected to the preliminary mixing tank through a chemical transmission pipeline, and the main material storage bin is connected to the preliminary mixing tank through a main material conveying channel, and a turbine agitator is arranged in the preliminary mixing tank.
[0013] Auxiliary materials include gelling materials, water and admixtures. The main material and auxiliary materials are preliminarily mixed in the preliminary mixing tank, and low-speed stirring is performed by the turbine agitator in the preliminary mixing tank, so that the solid main material and the liquid are fully wetted and contacted to form a uniform slurry.
[0014] Preferably, a plurality of auxiliary material storage bins are provided, each of which contains a single type of auxiliary material; the bottom outlet of the auxiliary material storage bin is conical, and a control valve and a distributor are installed on the bottom outlet.
[0015] Auxiliary materials are mostly fluid or dusty substances. The auxiliary material storage bin adopts a shaped bottom and single placement to more conveniently control the delivery amount and type of auxiliary materials. The control valve is controlled by the distributor, and the amount of auxiliary materials can be adjusted according to the coagulation degree of the slurry during the initial mixing, so that the gelling effect and strength of the self-compacting backfill material meet the requirements. For example, if cement is used as a gelling material, adjusting its dosage can be used to control the strength of the self-compacting backfill material; fly ash can be used as an admixture to increase the activity of the gelling material; and adding gypsum and lime can be used to balance the cement to avoid excessive strength.
[0016] Preferably, the preliminary mixing tank is connected to the secondary mixing tank via a slurry conveying channel, the auxiliary material storage bin is connected to the secondary mixing tank via a chemical transmission pipeline, and a spiral agitator is provided in the secondary mixing tank.
[0017] The slurry mixed in the primary mixing tank will be sent to the secondary mixing tank. The auxiliary material storage bin is connected to the secondary mixing tank. Additives such as water reducer and air entraining agent can be added through the chemical transmission pipeline. A more refined mixing is carried out through a spiral agitator, which can effectively prevent the stratification phenomenon after the initial mixing and ensure the generation of self-compacting backfill materials with uniformity and density.
[0018] Preferably, the secondary mixing tank is connected to a stirring and conveying device to achieve continuous stirring during the conveying process of the self-compacting backfill material.
[0019] The backfill material obtained from the secondary mixing tank is transported to the backfill site through the mixing and conveying equipment. During the transportation process, the mixing and conveying equipment needs to maintain continuous stirring to prevent the backfill material from being damaged due to drying and sedimentation.
[0020] Preferably, the secondary mixing tank is also connected to a detection device to detect the performance indicators of the product in the secondary mixing tank.
[0021] The backfill material obtained from the secondary mixing tank will also be transported to the testing equipment for testing, mainly to test the main performance control indicators such as density, slump expansion and compressive strength, and evaluate the initial setting time.
[0022] Preferably, an automatic control system is also included, and the automatic control system is electrically connected to the screening equipment, wind classification equipment, magnetic separation equipment, monitoring equipment, distributor and detection equipment to achieve coordinated control of the above equipment.
[0023] The automatic control system is used to monitor and adjust the conveying speed, flow rate, etc., and adjust the parameters of each device in real time according to the test results of the testing equipment.
[0024] Compared with the prior art, the beneficial effects of the utility model are:
[0025] (1) A sorting system is set up to accurately filter and sort out the required main materials, improving the efficiency and quality of processing. At the same time, each device is also equipped with a monitoring device to adjust the filtering effect and accurately control the filtering quality.
[0026] (2) There are multiple auxiliary material storage bins, each of which is used to store a single type of auxiliary material and the delivery volume is controlled by control valves and distributors, making the classification of materials clearer and facilitating refined management and control.
[0027] (3) Through the combination of the primary mixing tank and the secondary mixing tank, the slurry after the first mixing can be stirred for the second time in the secondary mixing tank, which improves the mixing uniformity. The low-speed stirring of the spiral agitator and the turbine agitator is used for synergistic effect to enhance the mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0029] Figure 1 This is a schematic structural diagram of a self-compacting backfill material processing device provided in an embodiment of the utility model.
[0030] Among them, 1-main material storage bin, 2-auxiliary material storage bin, 3-screening equipment, 4-wind classification equipment, 5-magnetic separation equipment, 6-monitoring equipment, 7-main material conveying channel, 8-chemical transmission pipeline, 9-primary mixing tank, 10-secondary mixing tank, 11-turbine agitator, 12-spiral agitator, 13-detection equipment. DETAILED DESCRIPTION
[0031] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but those skilled in the art will understand that the embodiments described below are part of the embodiments of the utility model, rather than all of the embodiments, and are only used to illustrate the utility model, and should not be considered as limiting the scope of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.
[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be fixed connection, detachable connection, or integrated connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0034] In order to more clearly explain the technical solution of the present invention, it is described in the form of specific embodiments below.
[0035] Example
[0036] like Figure 1 As shown, this embodiment provides a self-compacting backfill material processing device, which mainly includes a main material storage bin 1, an auxiliary material storage bin 2, a sorting system, a preliminary mixing tank 9, a secondary mixing tank 10 and an automatic control system. Among them, the main material storage bin 1 is connected with the sorting system and the preliminary mixing tank 9 through a main material conveying channel 7; the auxiliary material storage bin 2 is connected with the preliminary mixing tank 9 and the secondary mixing tank 10 through a chemical transmission pipeline 8; and the sorting system is arranged between the main material storage bin 1 and the crushing equipment.
[0037] The sorting system includes a screening device 3, a wind classification device 4 and a magnetic separation device 5 connected in sequence, so that the crushed main material is subjected to screening, wind classification and magnetic separation steps in sequence. In this embodiment, the screening device 3 adopts a rotary screening machine, which mainly passes the main material through a screen of a specific size by vibration and rotation to remove large particles and impurities, so that the particle size of the obtained main material is not higher than 30mm; the wind classification device 4 blows away light impurities such as paper, cloth, leaves, plastics, etc. often contained in construction waste through different wind forces to avoid excessive organic matter content in the main material; and the magnetic separator is used to separate impurities containing magnetic particles, such as steel fragments, metal pipes, nails and other metal objects often contained in construction waste and engineering waste.
[0038] Among them, monitoring equipment 6 is provided on the rotary screening machine, the wind classification equipment 4 and the magnetic separator. The monitoring equipment 6 is electrically connected to the automatic control system for continuously monitoring whether the main material after passing through each link of the sorting system meets the technical requirements of filtration, and ensures that the organic matter content of the main material does not exceed 5%, and feeds back the monitoring results to the automatic control system to facilitate real-time adjustment of the filtration degree of the filter equipment.
[0039] The filtering device is connected to the main material storage bin 1 through the main material conveying channel 7. The main material that passes the filtration will be conveyed to the main material storage bin 1 and stored in categories according to the material strength and the like.
[0040] The auxiliary material storage bin 2 is used to store auxiliary materials such as cementitious materials, admixtures, water, additives, etc. Since most of them are fluid or dusty substances, an auxiliary material storage bin 2 with a conical bottom is used to store them according to the single material, so that the auxiliary materials can be added from the bottom through the transfer pipe 8 to the preliminary mixing tank 9 and the secondary mixing tank 10.
[0041] Among them, a control valve and a distributor are provided at the bottom outlet of the auxiliary material storage bin 2. The control valve is controlled by the distributor, and the distributor is electrically connected to the automatic control system. The auxiliary material dosage can be adjusted according to the mixing degree in the preliminary mixing tank 9 and the secondary mixing tank 10, so that the gelling effect and strength of the self-compacting backfill material meet the requirements.
[0042] The preliminary mixing tank 9 is used to preliminarily mix the main material and the auxiliary material, and is equipped with a turbine stirrer 11 for low-speed stirring, so that the solid main material and the liquid are fully wetted and contacted to form a uniform slurry.
[0043] The secondary mixing tank 10 performs secondary mixing on the slurry mixed in the primary mixing tank 9. At this time, additives such as water reducer, air entraining agent, retarder, etc. are added to the auxiliary material storage bin 2. High-speed stirring is performed by the built-in spiral agitator 12 to achieve more refined mixing and generate a self-compacting backfill material with uniformity and density.
[0044] It also includes a stirring and conveying device and a detection device 13 connected to the secondary mixing tank 10. The self-compacting backfill material obtained by the secondary mixing tank 10 will be delivered to the backfilling site through the stirring and conveying device. The stirring and conveying device maintains continuous stirring during the conveying process to prevent the backfill material from being damaged due to drying and precipitation. In this embodiment, the stirring and conveying device adopts a double-shaft stirring conveyor of a WLS auger.
[0045] The detection device 13 is electrically connected to the automatic control system, and the self-compacting backfill material obtained by the secondary mixing tank 10 is also transported to the detection device 13 to test the main performance control indicators of the self-compacting backfill material and evaluate the initial setting time. The initial setting time is mainly determined by the conveying time of the mixing and conveying equipment. If the required time is long, it is necessary to extend the initial setting time of the self-compacting backfill material. According to the test results of the detection device 13, the automatic control system will accordingly adjust the dosage of the retarder and other admixtures added by the auxiliary material storage bin 2 to the secondary mixing tank 10 during the secondary mixing process.
[0046] Finally, it is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the principles and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.
Claims
1. A self-compacting backfill material processing device, characterized in that: It includes a main material storage bin, which is connected to a sorting system through a main material conveying channel. The sorting system includes a screening device, a wind classification device and a magnetic separation device which are connected in sequence, and the magnetic separation device is connected to the main material storage bin.
2. The processing device according to claim 1, characterized in that The screening equipment, wind classification equipment and magnetic separation equipment are all provided with monitoring equipment.
3. The processing device according to claim 1, characterized in that It also includes an auxiliary material storage bin, which is connected to the preliminary mixing tank through a chemical transmission pipeline, and the main material storage bin is connected to the preliminary mixing tank through a main material conveying channel. A turbine agitator is arranged in the preliminary mixing tank.
4. The processing device according to claim 3, characterized in that There are several auxiliary material storage bins, each of which contains a single type of auxiliary material; the bottom outlet of the auxiliary material storage bin is conical, and a control valve and a distributor are installed on the bottom outlet.
5. The processing device according to claim 4, characterized in that The primary mixing tank is connected to the secondary mixing tank through a slurry conveying channel, the auxiliary material storage bin is connected to the secondary mixing tank through a chemical transmission pipeline, and a spiral agitator is arranged in the secondary mixing tank.
6. The processing device according to claim 5, characterized in that The secondary mixing tank is connected with a stirring and conveying device to achieve continuous stirring during the conveying process of the self-compacting backfill material.
7. The processing device according to claim 6, characterized in that The secondary mixing tank is also connected to a detection device to detect the performance indicators of the product in the secondary mixing tank.
8. The processing device according to any one of claims 1 to 7, characterized in that: It also includes an automatic control system, which is electrically connected to the screening equipment, wind classification equipment, magnetic separation equipment, monitoring equipment, distributor and detection equipment to achieve coordinated control of the above equipment.